Manganese dioxide

Rarity: Uncommon

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At a glance

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Notion

Domain

Science and technology

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What Wikipedia says

Manganese dioxide is the inorganic compound with the formula MnO2. This blackish or brown solid occurs naturally as the mineral pyrolusite, which is the main ore of manganese and a component of manganese nodules.

Excerpt from the Wikipedia article “Manganese dioxide”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Benjah-bmm27, Public domain, via Wikimedia Commons.